Chilkat Objective-C Library Downloads

#import "CkoCrypt2.h"
#import "NSString.h"
CkoCrypt2 *crypt = [[CkoCrypt2alloc] init];
BOOL success = [crypt UnlockComponent: @"Anything for 30-day trial"];
if (success != YES) {
NSLog(@"%@",crypt.LastErrorText);
return;
}
// Specify 3DES for the encryption algorithm:
crypt.CryptAlgorithm = @"3des";
// CipherMode may be "ecb" or "cbc"
crypt.CipherMode = @"cbc";
// KeyLength must be 192. 3DES is technically 168-bits;// the most-significant bit of each key byte is a parity bit,// so we must indicate a KeyLength of 192, which includes// the parity bits.
crypt.KeyLength = [NSNumber numberWithInt:192];
// The padding scheme determines the contents of the bytes// that are added to pad the result to a multiple of the// encryption algorithm's block size. 3DES has a block// size of 8 bytes, so encrypted output is always// a multiple of 8.
crypt.PaddingScheme = [NSNumber numberWithInt:0];
// EncodingMode specifies the encoding of the output for// encryption, and the input for decryption.// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = @"hex";
// An initialization vector is required if using CBC or CFB modes.// ECB mode does not use an IV.// The length of the IV is equal to the algorithm's block size.// It is NOT equal to the length of the key.NSString *ivHex = @"0001020304050607";
[crypt SetEncodedIV: ivHex encoding: @"hex"];
// The secret key must equal the size of the key. For// 3DES, the key must be 24 bytes (i.e. 192-bits).NSString *keyHex = @"000102030405060708090A0B0C0D0E0F0001020304050607";
[crypt SetEncodedKey: keyHex encoding: @"hex"];
// Encrypt a string...// The input string is 44 ANSI characters (i.e. 44 bytes), so// the output should be 48 bytes (a multiple of 8).// Because the output is a hex string, it should// be 96 characters long (2 chars per byte).NSString *encStr = [crypt EncryptStringENC: @"The quick brown fox jumps over the lazy dog."];
NSLog(@"%@",encStr);
// Now decrypt:NSString *decStr = [crypt DecryptStringENC: encStr];
NSLog(@"%@",decStr);